Open Access. Powered by Scholars. Published by Universities.®
Forensic Science and Technology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Daubert (2)
- Forensic science (2)
- Admissibility (1)
- Court-appointed experts (1)
- End-match (1)
-
- Footwear evidence (1)
- Forensic taphonomy (1)
- Frye (1)
- Handwriting comparison (1)
- Indoor decomposition (1)
- Medicolegal death investigations (1)
- Novice (1)
- Paper (1)
- Pattern analysis (1)
- Physical match (1)
- Questioned documents (1)
- Randomly acquired characteristics (1)
- Scientific evidence (1)
- Tearing (1)
- Total body score (1)
- Wear characteristics (1)
Articles 1 - 5 of 5
Full-Text Articles in Forensic Science and Technology
The Accumulation Of Wear On Footwear Pattern Analysis, Sarah Pawloski
The Accumulation Of Wear On Footwear Pattern Analysis, Sarah Pawloski
Themis: Research Journal of Justice Studies and Forensic Science
Wear is defined as the erosion of a shoe’s outsole or the loss of tread pattern, and it happens gradually over time with use. After a shoeprint is collected from a crime scene, it is questioned whether an individualization can be made if an exemplar is created after additional use of the shoe. The shoes of ten volunteers at San Jose State University were analyzed over a period of 40-45 days. Wear and Randomly Acquired Characteristics (RACs) were analyzed over time to determine if there were any observable changes or additions to the already present wear. It was hypothesized that …
Novice Ideas: Handwriting Comparisons Conducted By An Untrained Individual, Maia Lister
Novice Ideas: Handwriting Comparisons Conducted By An Untrained Individual, Maia Lister
Themis: Research Journal of Justice Studies and Forensic Science
Forensic analysis of questioned documents includes chemical analyses of paper and ink as well as handwriting comparisons. Several elements affect handwriting analyses, including the presence of discriminatory factors that can individualize a handwriting sample and whether the handwriting has been disguised. Five handwriting samples were gathered from six individuals comprising of one reference, three natural unknowns, and one disguised sample per person. A novice conducted analyses on every collected sample and conducted comparisons of the reference sample to the unknown and disguised samples in an attempt to correctly source the unknown and disguised samples. The novice showed a high level …
Decomposition Of Pig Carcasses At Varying Room Temperature, Jacqueline Abad Santos
Decomposition Of Pig Carcasses At Varying Room Temperature, Jacqueline Abad Santos
Themis: Research Journal of Justice Studies and Forensic Science
The goal of this study is to assess the qualitative scoring of decomposition scales with statistical analysis while also determining which indoor environment will decompose the fastest. When comparing the three indoor environments, water decomposition appears to be the fastest, but the method of analysis for this study determines that using decomposition scales to analyze such environments may produce statistically insignificant results. For this study, piglets were put in a dry steel tub, a water filled steel tub, and a suitcase. These were recorded using photographs for 25 days and then scored using decomposition scales. The total score was divided …
Scientific Evidence Admissibility: Improving Judicial Proceedings To Decrease Erroneous Outcomes, Leica Kwong
Scientific Evidence Admissibility: Improving Judicial Proceedings To Decrease Erroneous Outcomes, Leica Kwong
Themis: Research Journal of Justice Studies and Forensic Science
In the United States, Federal Rules of Evidence 702, the Frye and Daubert standards govern the admissibility of scientific evidence in the courtroom. Some states adopted Frye while others adopted Daubert, causing varying judicial outcomes. The verdicts in some cases may be erroneous due to a nationally used standard. Frye has broad criteria of requiring scientific evidence to be generally accepted. While Daubert contains more requirements for the evidence to be admissible, such as peer review, publication, and scientific principles. Daubert, alongside FRE 702, provides a thorough guideline for trial judges who have the gatekeeping role to decide admissibility aiming …
Physical Match: Uniqueness Of Torn Paper, Marilyn Aguilar
Physical Match: Uniqueness Of Torn Paper, Marilyn Aguilar
Themis: Research Journal of Justice Studies and Forensic Science
In the forensic science field, it is generally accepted that all tears and fractures are unique; however, there is limited scientific evidence to support this. This study tests the claim that all tears are unique, focusing on paper. One-hundred Office Depot brand 3” x 5” blank, white index cards were torn in half by hand. Six halves were randomly removed; the remaining 94 halves were mixed and then matched by a novice using end-match analysis. The removal of the 6 random halves left 44 matching pairs. Of the remaining halves, all 44 pairs were correctly matched. The results show that …